Razor-stropping machine.



I. BUCHLER.

RAZOR STROPPING MACHINE.

APPLIOATION rum) NOV.26,1912.

Patented May 19, 1914.

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UNITED 1 STATES PATENT OFFICE ISIDOR BUCHLER, OF NEW YORK, N. Y., ASSIGNORTO SAMUEL KANNER, F

NEW YORK, N. Y.

RAZOR-STROPPING MACHINE.

Specification of Letters Patent.

Patented May 19, 1914.

Application filed November 26, 1912. Serial N 0. 733,587.

5 York and State of New York, have invented certain new and useful Improvements in Razor-Stropping Machines, of which the following is a specification.

The invention relates to improvements in razor stropping machines of the class comprising a frame through which a strop is threaded and is to be alternately pulled at its ends, and a blade holder adapted to alternately carry the blade to the reaches of the strop as said reaches are alternately pulled outwardly in line with their length, the blade moving to one reach as said reach is pulled outwardly and to the other reach when it is pulled outwardly.

The object of the invention is to provide an efficient stropping machine of the class referred to in which there will be secured dur-, ing the use of the machine, the stropping of the razor blade on each side by slide-strokes acting along a direction from the inner end or heel of the blade to the outer end or toe thereof, there being an automatic varying of the transverse relation of the strop and blade as the reaches of the strop are alternately pulled.

I prefer in carrying out my invention, to employ an oscillatory blade holder located between the reaches of the strop and means to effect an automatic reverse transverse movement in said reaches as one reach is pulled outwardly, and the other travels oppositely in line with its length, thereby causing the outwardly moving reach to also move transversely along one edge of the blade in a direction from the heel to the toe thereof and the oppositely moving reach to also move transversely to a position at which it may when pulled outwardly engage the other edge of the blade and deliver a sliding stroke along the same in a direction from the heel to the toe of the blade, and herein I present my invention as embodied in a machine of such preferred character, without however intending to confine the invention to a machine in which the new result is attained by securing reverse transverse movement of the reaches of the strop with relation to a razor blade which has an oscillatory but no endwise movement, since my invention also extends to machines in which the result sought is secured by an endwise movement of the blade, with no necessary transverse movement of the strop.

Razor stropping machines in which the relation of the blade to the strop varies by an endwise movement of the blade, are shown in Letters Patent No. 825,947, dated July 17, 1900, and in Letters Patent granted to me and numbered, respectively, 1,016,931 and 1,029,911. In these machines in which the blade is given an endwise movement one edge of the blade receives a stroke from the heel to the toe thereof and the other edge of the blade receives a stroke from the toe to the heel thereof.

My present invention is characterized by the fact that with the use thereof the blade is given sliding strokes along both edges from the heel to the toe of the blade.

The invention will be understood from the following detailed description, reference being had to the accompanying drawings, in which:

Figure 1 isa side elevation of a razorstropping machine embodying my invention, the ends of the strop being broken away; .Fig. 2 is a vertical transverse section of the same, on a larger scale, on the dotted line 2-2 of Fig. 1; Fig. 3 is a horizontal section through the same on the dotted line 33 of Fig.1, and Fig. 4 is a vertical transverse section, partly broken away, on the dotted line 4-4 of Fig. 1.

In the drawings, 10 designates the general frame of the machine, 11 the strop, 12

a rockable friction roller or frame ournaled between the sides 13 of the main frame 10 and over which the strop is folded, 14k a pivotally mounted blade holder, 15 a blade shown as held by said holder and 16 a loop of usual character by which the machine may be suspended from or connected with a restraining hook or the like.

The general frame 10 will preferably be formed of sheet metal with the sides 13 and a top 17, the latter constituting a reasonably narrow upwardly arched bar connect ing the sides 13 and forming within it a chamber of substantially semi-cylindrical outline receiving at its central portion a filler block 18 and a leaf-spring 19,said spring extending transversely between the lower edges of the top 17 and longitudinally between the ends of said top and being at its central portions held against the filler block 18 and secured in position by lips .20 formed on the lower side edges of the top 17 and turned inwardly under said spring. The purpose of the spring 19 is, as hereinafter more fully explained, to automatically 1 and instantly move the blade 15 from thestrop when the pulling strain is relieved.

rod 21 and outer parallel rods 22, 23, all of these rods being of usual character with the exception that the rods 22, 23 are respectively formed with right and left spiral grooves 24, 25 respectively, which constitute one of the important features .of the present invention.

The blade holder 14 is formed with converging jaws, as usual, and equipped with an interior spring 26 to press against the back edge of the blade and force its cutting edge firmly through the opening between the lower ends of said jaws. The blade holder 14 is formed at its ends with upwardly extending plates 27, which lie close against the inner faces of the sides 13 of the main frame 10 and are pivotally supported at their upper ends on pins 28, which extend inwardly through the sides '13 adjacent to the top of the main frame. The plates 27 are formed with segmental slots 29, which permit of the oscillatory motion of the blade holder 14 without interference by the pivot pins 30 which pass through said slots and support the rookable frame 12. Above the slots 29 the plates 27 are formed with openings 130 (Fig. 4) which are centrally below the supporting pins 28 and receive studs 31' which project from the upper edges of the ends of the frame 12 and act during the rocking movements of said frame to effect the proper oscillatory movements of the blade holder 14. The plates 27 are rigid with the blade holder 14, and hence with every movement imparted to said plates by the frame 12, such movement will be communicated to the jaws holding the blade 15. The upper ends of the plates 27 are squared off, and the ends of the spring 19 press downwardly on said ends. The action of the ends of the spring 19 is normally to hold the blade holder 14 in a central position between the reaches of the strop and to return said blade holder to such position whenever, during the operation of the strop, said holder is moved therefrom.

The details of the blade holder 14, plates 27, rockable frame 12 and spring 19 are not claimed herein, the same having been made the subject of an application for Letters Patent filed September 24, 1912, Serial No.

. the

7 22,003, by Samuel Kann'er, nor is the present invention limited to any special rockable frame 12 and blade holder 14, there being a number of rockable frames and c0- acting blade holders all having the same general movements, well known in this art. My invention resides more particularly as hereinbefore explained in novel means for permitting the stropping of both sides of blade from the heel to the toe portion thereof, and it will therefore be unnecessary for me toelaborately explain the cooperating actions of the rockable frame 12 and blade holder 14.

I have hereinbefore stated that the rods 22, 23 are formed with right and left hand grooves 24, 25, respectively. Uponthe rods 22, 23 I mount rollers 32, 33, respectively, which are in the form of hollow sleeves having at their ends spool heads or disks 34 and provided with studs 35, 3.6, respectively, which extend inwardly and respectively enter the spiral grooves 24, 25 of the rods 22, 23, as will ence to Fig. 3. The rollers 32, 33 in length about equal the width of the strop 11 and the reaches of said strop are confined between the heads 34 on the ends of said rollers, so that in the use of the machine the action of the strop'will cause the rotation and reverse shifting or traveling movements of the rollers and the reaches of the strop will by the engagement of the heads 34 with the edges thereof, be caused to follow said rollers during their reverse traveling movements. The rollers 32, 33 are initially located out of horizontal alinement with each other, one of said rollers being initially located adjacent to one side 13 of the main frame and the other roller adjacent to the other side 13 of said frame, as shown in Fig. 3. The strop 11 is threaded through the main frame of the machine and folded over the rockable frame 12, one reach of the strop being extended betweenthe rod 21 and roller 32 and the other between said rod'21 and the roller 33.

The stropping of the razor blade 15 is performed by giving the reaches of the strop alternate pulling strains in the usual way, the blade 15 being alternately rocked to the outgoing reaches of the strop. Duringthe alternate movements of the reaches of the strop, said. reaches are caused by the rollers 32, 33 and spirals 24, 25 to have reverse transverse movements imparted to them, the front reach, shown in Fig. 1, moving toward the left when said reach is pulled downwardly to strop a blade and the rear reach, looking at Fig. 1, being moved toward the right when said reach is moved upwardly or oppositely to the front reach. When the rear reach, looking at ig. 1, is pulled down-, wardly, after having completed its upward movement, it will be shifted by its roller 33 be clearly understood on refer- I toward the left and the front reach, shown in Fig. 1, will while moving upwardly be at the same time shifted transversely toward the right or back to the position in which it is shown in Fig. 1. The reaches of the strep are by reason of their reverse transverse shifting movements during their endwise movements, permitted to act against the opposite sides of the blade correspondingly and. always strep the blade by a sliding stroke traveling from the heel to the toe thereof. In the construction shown in the drawings the reaches of the strop frictionally engage and during their endwise movements against, rotate the rollers 32, 33, and this results in said rollers, by reason of their studs or pins 35, 36 being respectively in the right and left hand spiral grooves 24, 25, being forced to travel in reverse directions along the rods 22, 23, whereby while one reach of the strop is acting against one side of the edge of a blade the other reach is moved transversely to a position allowing it to correspondingly act against the other side of the edge of said blade when said other reach is pulled outwardly.

The rollers 32, 33 and spirals 24, 25 permit the blade to be stropped from toe to heel or from heel to toe, but it is my purpose to strep the blade from heel to toe and hence initially the rollers 32, 33 will be located as shown in Fig. 1, to permit the first reach of the strep pulled outwardly to strop the blade along from the heel to the toe thereof. The frame 10 should be greater in width be tween the sides 13 than the width of the strop so as to permit the reaches of the strep to be shifted transversely in opposite directions during their endwise movements by the action of the rollers 32, 33, which are actuated from said reaches. In the machine of my invention I provide for relative transverse movement between the blade-holder and strep permitting the strop to come spondingly strop both sides of the blade by slide strokes extending along from one end to the other of the blade, and preferably said strokes extend along from the heel to the toe of the blade, means being provided, actuated by the movement of the strep, to present the blade commencing at its heel portion to the outgoing reach of the strep.

What I claim as my invention and desire to secure by Letters Patent, is:

1. In a razor stropper, the combination of a frame, a roller journaled in said frame, a

razor holder connected to said roller so as to be oscillated from side to side, a strep engaging said roller, a pair of rollers adapted to be engaged by said strep, and means for causing the said pair of rollers to have an endwise movement with respect to said razor holder.

2. In a razor stropping machine, the combination of a frame, a roller mounted in said frame at the top thereof, a blade holder connected to said roller, a pair of rollers carried by the bottom of said frame, a strep adapted for engagement with said firstmentioned roller and the pair of rollers, and means for causing endwise movement of said pair of rollers and the strop with respect to the blade holder.

3. In a razor stropping machine, the combination of a frame involving a rockable support, a blade holder in operative relation with said support, right and left hand screw supports, each screw carrying a terminally flanged roller connected thereto for endwise movement upon rotation of the roller, and a strop adapted for engagement with the rockable support and the rollers, whereby said strop together with the rollers is caused to travel endwise of the support in opposite directions.

4. In a razor stropping machine, the combination of a frame, a rockable support carried by said frame, a blade holder connected to said support, a right hand screw, a left hand screw, each screw having a roller mounted thereon for endwise movement, and a strep adapted for engagement with the rockable support and the rollers, said rollers being constructed to carry the strep there with in an endwise movement.

5. In a razor stropping machine, the combination of a frame involving a rockable support, a blade holder in operative relation with said support, rotary endwise movable devices, a strop engageable with the support and the devices, and means whereby said strep together with the devices is caused to travel endwise of the support when the strep is operated.

Signed at New York, in the county of New York, and State of New York, this 25th day of November, A. D. 1912.

ISIDOR BUCI-ILER.

Witnesses CHAS. C. GILL, ARTHUR lVlARION.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

